- substr: documentation ( source)
- print_r: documentation ( source)
- strrpos: documentation ( source)
<?php
$filename = 'monkey.skunk.kmzzrd';
$extensionIndex = strrpos($filename, '.');
$extension = substr($filename, $extensionIndex + 1);
$title = substr($filename, 0, $extensionIndex);
print_r($title);
?>